• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Conceptual Design of a Communications Relay Satellite for a Lunar Sample Return Mission
【2h】

Conceptual Design of a Communications Relay Satellite for a Lunar Sample Return Mission

机译：用于月球样品返回任务的通信中继卫星的概念设计

页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In 2003, NASA solicited proposals for a robotic exploration of the lunar surface. Submissions were requested for a lunar sample return mission from the South Pole-Aitken Basin. The basin is of interest because it is thought to contain some of the oldest accessible rocks on the lunar surface. A mission is under study that will land a spacecraft in the basin, collect a sample of rock fragments, and return the sample to Earth. Because the Aitken Basin is on the far side of the Moon, the lander will require a communications relay satellite (CRS) to maintain contact with the Earth during its surface operation. Design of the CRS's orbit is therefore critical. This paper describes a mission design which includes potential transfer and mission orbits, required changes in velocity, orbital parameters, and mission dates. Several different low lunar polar orbits are examined to compare their availability to the lander versus the distance over which they must communicate. In addition, polar orbits are compared to a halo orbit about the Earth-Moon L2 point, which would permit continuous communication at a cost of increased fuel requirements and longer transmission distances. This thesis also examines some general parameters of the spacecraft systems for the mission under study. Mission requirements for the lander dictate the eventual choice of mission orbit. This mission could be the first step in a period of renewed lunar exploration and eventual human landings.
机译：2003年，NASA征集了对月球表面进行机器人探测的提议。要求从南极-艾特肯盆地提交月球样品返回任务。该盆地之所以令人感兴趣，是因为它被认为包含月球表面上一些最古老的可触及岩石。正在研究一项任务，该任务将使航天器降落在盆地中，收集岩石碎片样本，并将样本返回地球。由于艾特肯盆地位于月球的另一侧，因此着陆器将需要一个通信中继卫星（CRS）来在其地面运行期间保持与地球的接触。因此，CRS轨道的设计至关重要。本文介绍了一种任务设计，其中包括潜在的转移和任务轨道，所需的速度变化，轨道参数和任务日期。检查了几个不同的低月球极地轨道，以比较它们对着陆器的可利用性以及它们必须通信的距离。另外，将极轨道与绕地球月球L2点的晕圈轨道进行比较，这将允许连续通信，但燃料需求增加，传输距离更长。本文还研究了用于研究任务的航天器系统的一些一般参数。着陆器的飞行任务要求决定了飞行任务轨道的最终选择。这项任务可能是新的月球探索和最终人类登陆时期的第一步。

著录项

  • 作者

    Brunner Christopher W.;

  • 作者单位
  • 年度 2005
  • 总页数
  • 原文格式 PDF
  • 正文语种
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号